I have a DZ77SL-50K motherboard and tried to update the BIOS by using one of the four methods suggested. I choose the most commonly used and this is the file I've downloaded...
It's the latest revision for my motherboard. After I run the file... system booted but I didn't see anything on screen.
There's a blinking green led STDBY.
I removed tha CMOS battery to reset BIOS settings and followed the bios recovery procedure without success.
Is it a problem related to BIOS upgrading fail or a video problem?
No graphic card on my system. I'm using integrated HDMI graphics.
According to the information provided the issue you are experiencing could be related to the BIOS update.
Here are our recommendations:
Test the system on a minimal configuration out of the chassis. Clear the CMOS battery for 30 minutes and test the system without memory looking for beep codes. Install minimum memory and proceed with a BIOS recovery test again as instructed here:
http://www.intel.com/support/motherboards/desktop/sb/cs-022312.htm Desktop Boards — BIOS update instructions
If the issue persists, replace the motherboard under warranty.